TY  - RPRT
TI  - Ground-Based GPS as a Calibration/Validation Tool for Tropospheric Sensing Instruments
AU  - Keihm, S.
AU  - Haines, B.
AU  - Bar-Sever, Y.
PY  - 1999
UR  - https://ntrs.nasa.gov/citations/20210001143
ID  - 20210001143
ER  -